JPH09280715A - Freezer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly cool spaces between shelves by means of cool air by forming a duct over a specified percentage of a space within a freezer main body extending from a top in a vertical direction by means of a partition plate and fan guard, providing cool air outlets for blowing the cool air in the duct between the shelves and providing a cool air return port for a cooling device at a bottom end of the partition plate. SOLUTION: Shelves 9 including a container 10 of a freezer main body 1 are installed by dividing width of about two-thirds of a storage space 3 from a top in such a manner as to be B<C<D<E, and a container 11 disposed in a lowermost stepped portion in the storage space 3 is installed at a position of one-thirds of the storage space 3 in such a manner as to form a cool air path 12 encircling the container 11. A blower 13 is disposed to face a mouse ring portion 14a formed by a partition plate 14 and the cool air cooled by a cooling device 8 is made to pass through outlets 15a, 15b formed by a fan guard 15 to blow the cooled air into the storage space 3 for cooling. A cool air return port 16 is provided in a bottom portion of the partition plate 14 and the fan guard 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling system for a freezer having a cooler, a blower, etc. on the back wall of a freezer.

[0002]

2. Description of the Related Art A conventional structure of this type will be described with reference to FIG. In the figure, 21 is a freezer main body. This freezer body 2
Reference numeral 1 denotes an outer box 22 and an inner box 23, a foam insulating material 24, a door 25, and a compressor 26, a cooler 27, and a refrigeration cycle.
It is composed of a blower 28 for cold air circulation. 29 is a storage formed in the inner box 23. 2 in this storage
Several wire-type shelving nets 30 are installed in the sheet 9 at equal intervals.

The cooler 27 is of a vertical type and is attached to the back wall portion of the above-mentioned storage compartment 29. The cool air circulation blower 28 is installed above the cooler 27.
Reference numeral 31 is a partition plate installed in front of the cooler 27 and the cool air circulation blower 28. The partition plate 31 is provided with a blowout port 32 that blows out the cool air blown out by the cool air circulation blower 28 into the inside 29 of the storage. Reference numeral 33 is a cold air suction port provided under the partition plate 31. Usually, the method of cooling the inside 29 of the storage in this type of freezer is performed as follows. That is, the cool air cooled by the cooler 27 is used for the cool air circulation blower 2
8 is blown to the upper part of the storage 29. The blown out cool air passes through the wire-shaped shelf net while cooling the food in the storage 29, and descends downward as indicated by the arrow. Then, it is returned to the cooler 27 through the cool air return port 33 provided in the lower part of the cooler 27. By repeating this, 29
The food contained therein was cooled to a predetermined temperature, for example, -18 ° C and below.

A conventional example of this type is, for example, Japanese Patent Laid-Open No. 62-62.
There is 237267 publication.

[0005]

The freezer having such a conventional structure has the following problems.

(1) In order to improve the storability of foods and the like in the storage, cold air blown to the upper part of the storage where the wire type shelf net is a plate-shaped shelf plate or a container drops from the top in order. There was a problem that the food on the shelf could not be cooled well as it went to the lower part of the freezer because it would be worn.

In other words, there is a problem that the temperature distribution in the freezing compartment is not uniform.

(2) Due to the structure, the cool air return port to the cooler 27 is located at a position of about 1/3 in the height direction of the inside 29 of the storage. For this reason, there is a problem that the cold air is sucked into the cold air return port from the middle without descending to the lowest stage, and the lower part of the inside 29 of the storage does not fall to a predetermined temperature.

[0009]

The present invention has been made to solve the above problems.

That is, a cooler vertically installed on the back wall of the inner box and a blower for forced circulation of cold air are attached vertically, and a partition plate made of a heat insulating material and a fan guard having an outlet are attached to the cooler and the blower. In the freezer installed in the front, the partition plate and the fan guard make the vertical direction about 2 /
A duct is formed over 3, and an outlet for blowing cold air in the duct is provided between a plurality of shelves (including containers) installed in the refrigerator, and a cool air return port to the cooler is provided at the lower end of the partition plate. Is formed. Further, specifically, a plurality of shelves (including containers) installed in the refrigerator are installed so that the frontage of the storage part becomes wider toward the lower part. Furthermore, the bottom shelf board installed at the height corresponding to the cold air return port to the cooler is used as a container with a depth, and the green in front of this container limits the cool air that goes to the cold air return port, and The cool air is guided to the container side provided in the.
In addition, a cold air passage for returning cold air to the cooler is formed between the container installed at the bottom of the refrigerator and the inner box. Further, the dimensions of the lowermost shelf plate (including the container) installed in the refrigerator and the upper end of the flange of the container installed in the bottom of the inner box are approximately 1.5 times the rising flange size of the container. It is a thing.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The details of the present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a vertical sectional view of a freezer equipped with the present invention,
2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a front view of FIG. 1 from which a fan guard is removed. In the figure, 1 is a freezer body. The freezer main body 1 is capable of keeping the inside of the freezer at −18 ° C. or lower and storing frozen foods and the like for a long period of time. Further, the freezer main body 1 has an outer box 2 forming an outer shell, an inner box 4 forming a storage compartment 3, a foamed heat insulating material 5, and a door 6.
Further, it is composed of a compressor 7, a cooler 8 and the like which constitute a refrigeration cycle. Reference numeral 9 is a shelf board installed in the storage 3 and 10 is a container. Then, the shelf 9 and the container 1
0 is installed in the storage 3 as follows. That is, the shelf board 9 including the container 10 is about 2/3 from the top of the storage compartment 3 above.
The front dimension is divided as shown in the figure and installed so that B <C <D <E. In other words, B <
C <D <E is set so that a large amount of food can be stored in the lower row. 11 is in storage 3
The container installed at the bottom of the. This container 11 is installed at a position of 1/3 of the storage 3 so as to form a cool air passage 12 around the container 11. The height of the rising flange 11a of the container 11 is formed to be about 1/3 of the height of the inner box 4, the bottom portion 4a and the container 10b. Therefore,
The food that can be stored in the container 11 does not stand up when the door 6 is opened or closed and is pushed down by the collar 11a and does not fall out. Reference numeral 13 is a blower for forced circulation of cold air, which is installed above the cooler 8, 14 is a partition plate made of a heat insulating material (for example, styrofoam material), and 15 is a fan guard. The blower 13 is a partition plate 14
Of the mouth ring portion 14a formed by the fan guard 15 that forms the cool air cooled by the cooler 8
Through a, 15b, etc., it is blown into the inside 3 of the storage to cool the inside 3 to the set temperature. 16 is a cold air return port. The return port 16 is provided below the partition plate 14 and the fan guard 15. A duct 17 is formed between the partition plate 14 and the fan guard 15. This duct 17
As shown in FIGS. 2 and 3, is provided close to both side walls of the inside of the storage 3, and cools the stored food in the inside of the storage 3 from both sides of the back surface of the inside of the storage 3 so as to wrap it.
Reference numeral 18 denotes a cold air blowout port that blows out cool air sent into the duct between the shelf plates 9 (including the container 10).

That is, a part of the cold air blown out from the forced air circulation blower 13 is blown out into the room made by the shelf board 9a from the air outlet 15a, and the air exit 15 is made in the room made by the shelf board 9b.
Cold air is blown out from b. In addition, cold air outlets 18a, 18 connected to the duct 17 are provided in the chamber formed by the containers 10a, 10b.
Cold air is blown out from each of b. In other words, the chamber created by each shelf including the container 10 is surely cooled by the cold air blown toward each chamber. Next, cooling of the container 11 will be described. Container 10b installed at the bottom of storage 3
Corresponds to the cold air return port 16. Therefore container 1
The cold air that has dropped to 0b is normally sucked into the cold air return port 16. The present invention is also characterized by preventing this and dropping cool air to the container 11 side. For this reason, in the present invention, the length of the front edge 10b 'of the container 10b is set to a sufficient length so that cool air is dropped toward the container 11 as shown in the drawing. The cool air dropped to the container 11 side sufficiently cools the container 11 and returns to the cool air return port 16 while passing through the cool air passage 12 formed between the bottom of the container 11 and the bottom 4a of the inner box.

Next, a cooling method for the stored food or the like when the frontage dimension is set to B <C <D <E and the frontage dimension is increased toward the lower side will be described. As described above, the chambers formed by the shelves 9a, 9b and the containers 10a, 10b are cooled by the cold air blown out from the cool air outlets 15a, 15b, 18a, 18b, but especially the containers 10a, 10b.
As shown in the figure, the chamber created by is opposed to the cooler 8, so that the partition plate 14 and the fan guard 15 are used in addition to the cooling by the cool air.
It will also be cooled by the heat conduction from. This is because the heat insulating thickness of the partition plate 14 cannot be taken sufficiently or is not taken.

According to the present invention, the heat conduction from the cooler is utilized to widen the opening toward the lower stage so that the storage amount can be changed.

[0016]

EFFECTS OF THE INVENTION Since the present invention has the structure described above, it is of course possible to form a duct formed in the container in the vertical direction approximately 2/3 in the container in the container, and of course each shelf (including the container). It is possible to uniformly cool the space).

Further, by installing several shelves (including containers) to be installed in the refrigerator such that the frontage of the storage portion becomes wider toward the lower part, the usability is improved and the shelf is on the shelf. The food can be cooled from top to bottom almost uniformly. That is, the food on the shelf near the cooler is affected by the cooler.

Further, the bottom shelf plate installed at the height corresponding to the cold air return port to the cooler is made a deep container, and the cold air going to the cold air return port is restricted at the front edge of this container, Since the cool air is guided to the container side provided at the bottom of the refrigerator,
There is no need to provide a special cold air guide.

Further, since the cold air passage for returning the cool air to the cooler is formed between the container installed in the bottom of the inside of the refrigerator and the inner box, the above-mentioned container is sufficiently cooled from the surroundings and has a predetermined temperature. Is held in.

Further, by providing an outlet for blowing cold air between several shelf plates (including containers) installed in the refrigerator,
Because a forced flow of cold air is created on the fan guard surface, it is possible to prevent the moisture in the air that enters the inside of the refrigerator when the door is opened from forming ice on the fan guard surface.

Furthermore, the size of the lowermost shelf plate (including the container) installed in the inside of the container and the upper end of the flange of the container installed at the bottom of the inner box is approximately 1.5 of the rising flange size of the container. Since it is doubled, the inside of this container is approximately 2.5 mm in height.
It is possible to store up to twice as many tall bottles, etc., and greatly improve usability.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a freezer equipped with the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view with the fan guard in FIG. 1 removed.

FIG. 4 is a vertical sectional view of a freezer having a conventional structure.

[Explanation of symbols]

1 ... Refrigerator body, 2 ... Outer box, 3 ... Inside storage, 4 ...
Inner box, 4a ... bottom, 5.
..Foam insulation, 6 ... Doors,
7 ... Compressor, 8 ... Cooler,
9 (9a, 9b) ... Shelves, 10 (10a,
10b) ... container, 10b '... front edge of container,
11 ... Container, 11a ...
Standing collar, 12 ... Cold air passage,
13 ... Blower for forced circulation of cold air, 14 ... Partition plate, 14a ... Mouth ring part, 15 ... Fan guard, 15a,
15b ... Blowout port, 16 ... Cold air return port,
17 ... duct, 18 (18a, 18b)
..Cold air outlets.

Claims (5)

[Claims] 1. A cooler vertically installed on the back wall of an inner box and a blower for forced circulation of cold air are attached vertically, and a partition plate made of a heat insulating material and a fan guard having an outlet are provided on the cooler and the blower. In the freezer installed in the front, the partition plate and the fan guard form a duct over about 2/3 of the vertical direction from the upper part of the inside of the freezer, and several shelves (including the container) installed in the freezer. A freezer characterized in that an air outlet for blowing out cold air in the duct is provided in the space, and a cold air return port to the cooler is formed at the lower end of the partition plate. 2. Shelf plates (including containers) installed in the refrigerator several times
The freezer according to claim 1, wherein the storage compartment is installed such that the front dimension of the storage section becomes wider toward the lower part. 3. The bottom shelf installed at a height corresponding to the cool air return port to the cooler is a container with a depth, and the cool air going to the cool air return port is restricted at the front edge of the container, The freezer according to claim 1, wherein cold air is guided to the container side provided at the bottom of the inside of the refrigerator. 4. The freezer according to claim 1, wherein a cold air passage for returning cold air to the cooler is formed between the container and the inner box installed at the bottom of the inside of the freezer. 5. The size of the lowermost shelf plate (including the container) installed in the storage box and the upper end of the flange of the container installed at the bottom of the inner box is approximately 1.5 times the rising flange size of the container. The freezer according to claim 1, characterized in that the freezer is doubled.